US941555A - Chair. - Google Patents

Description

L. BERZON 62: H. GOLDBERG.

CHAIR. APPLIGATION FILED AUG. 25, 1909.

-' PatentedNoi 30, 1909.

WITNESSES.- G 2 4770 NEVS.

NDREW. a. GRAHAM 00.. FHOTO-LIYHOGRAFRERS. wAsHmsToN. b. c.

LOUIS BERZON AND HARRIS GOLDBERG, 0F PHILADELPHIA, PENNSYLVANIA.

CHAIR.

Specification of Letters Patent.

Patented Nov. 30, 1909.

Application filed August 25 1909. Serial No. 514,478.

To all whom it may concern:

Be it known that we, LOUIS BERZON, a subject of the Czar of Russia, and HARRIS GOLD- BERG, a citizen of the United States, both residing at Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Chairs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of this specification.

The object of the invention is to provide a chair provided with a folding back and footrest adapted to be interconnected so as to be capable of being moved together into different positions and arranged to be interlocked in any of such positions, and further, to adapt such folding back and foot-rest and interconnected mechanism for application to a rocking chair in such manner that the chair will at all adjustments be nicely balanced and capable of being rocked with the slightest desirable expenditure of manual power.

In the drawings, which illustrate a preferred embodiment of our invention: Figure 1 is a side elevation of the chair; Fig. 2 is an inverted plan of the same, and Fig. 3 a detail of the locking contrivance shown in Fig. 2.

The rigid frame of the chair, comprises the rockers a, the uprights b, the seat 0 and the arm rests d. The back 6 of the chair is pivoted between the rear uprights at e; f is a lever pivoted at its upper end to the front end of a bracket 9 depending from a plate It secured to the central portion of the bottom of the seat 0. 2', i, are a pair of arms pivoted at y, j, to the front of the seat, and 7c is a board connecting said arms and against which the legs of the user are adapted to rest. To the front or lowerends of the arms 2', i, which project beyond the board is, are pivoted, between their ends, the arms 1, Z. m is a bar connecting the front ends of the arms Z and adapted to act as a rest for the feet. The rear ends of the arms Z, Z are bent inwardly toward each other and are together pivoted to the lower end of the lever f. 0 is a link connecting the lever f near the latters upper end with the lower end of the pivoted back 6.

From the foregoing description it will be understood that the connection between the back 6 and the leg and foot-rest 7', 70, Z, we is such that the actuation of one actuates the other and that the back will be lowered and the leg and foot rest raised, or vice versa, simultaneously.

The following mechanism is provided to lock the movable parts of the chair in any given position. Depending from the rear part of the plate It is a sleeve-shaped hanger or bearing 9 through which extends the inner end of a transversely extending rod or shaft 1". The outer end of the shaft 1' is carried by a bearing on the hanger s secured to the bottom of the seat 0 near the side edge thereof. Pinned to the shaft 7" is a handlever 25, and a collar or sleeve u and bear ng 9 abut against each other, their abutting ends being inclined at an oblique angle to the axis of the shaft so that when the shaft is turned, the abutting ends. of the sleeve 14 and bearing 9 will act mutually as cams, an the shaft 1 will either be forced outwardly (to the left, Fig. 3) or allowed to move 1nwardly (to the right, Fig. 8) dependent upon the direction in which the shaft 18 turned. The shaft 1' is turned to permlt the shaft to slide inwardly by pulling up the hand-lever t, but the hand-lever is normally held in position to force the shaft outwardly, by means of the coil spring t.

WVhen the hand lever t and shaft 4 are in their normal positions, the movable parts of the chair are locked in their adjusted positions by means of the following mechanism. 1) is a lever having teeth or serrations '0 along one side thereof and slotted to engage the shaft 1". The front end of this lever is pivoted to a projection on the board is. w is a disk loosely sleeved on the shaft 0". m is a locking plate loose on the shaft 7 and cut away to form annular recess surrounding the shaft r for the reception of a coil spring 00'. y is a stop or head secured to the inner end of the shaft 1" and between which and the disk w the coil spring 00 is confined.

When the hand lever 25 is turned upward, the shaft 1" is free to slide inwardly as before described. -This sliding movement is automatically effected by means of the coil spring as acting between the disk 'w and the plate w abutting against the head y of the shaft. The withdrawal of the plate m from lever o unlocks the latter, permitting the movable parts of the chair to be adjusted as desired. After the adjustment is effected, the hand-lever t is released and the spring t returns the lever t to its normal position,

. the slot of said lever,

thereby rocking the shaft 1 and at the same time shifting it longitudinally to its normal position, owing to the cam actlon of sleeve it upon bearing 9, thereby causing the toothed or serrated face of the plate w to engage the lever o and lock it and consequently all the movable parts of the chair in their adjusted positions.

Pivoted to the arms'l of the foot-rest, near their front ends, are arms a, a, connected by bars .2, a. These arms may be swung upwardly and outwardly as shown in full lines Figs. 1 and 2, or downwardly and inwardly as shown in dotted lines Fig. 1.

The construction shown and described is such as to permit an easy and simultaneous adjustment of the foot rest and chair-back within wide limits, while at any given adjustment the body of the chair is nicely balanced on its rockers and the adjustable members are automatically held securely in the positions to which they may have been moved.

Having now fully described our invention, what we claim and desire to protect by Letters Patent is:

1. In a chair, the combination with the relatively fixed chair body, of members movable with relation thereto, a slotted lever included in said movable elements, a turnable and slidable shaft extending through a locking plate on the shaft, a spring tending to slide the shaft in one direction and release the locking plate, a spring normally holding the shaft shifted in the other direction, and manual means adapted, against the opposition of the second spring, to turn said shaft to permit the first spring to slide said shaft and release the locking plate.

2. In a chair, the combination with the relatively fixed chair body, of members movable with relation thereto, a slotted lever in cluded in said movable elements, a turnable and slidable shaft extending through the slot of said lever, a locking plate on the shaft, a spring tending to slide the shaft in one direction and release the locking plate, mutually engaging cams on the chair body and shaft respectively adapted, when said shaft is turned in one direction, to force the shaft outward against the action of said spring and engage the locking-plate and lever, a second spring normally turning and holding said shaft in the last-named direction, and means to turn the shaft in opposicombination with the body, of members movablewith relation thereto, a shaft bearing secured to the body, a shaft turnable and slidable in said bearing, a sleeve secured to the shaft and engaging said bearing, said sleeve and bearing having opposing cam surfaces whereby when the shaft is turned in one direction or the other it .will either be forced outward or permitted to move in ward, a handle on the shaft, a slotted lever included in said movable members and engaging the shaft, a locking plate loose on the shaft, a stop on the shaft adapted to force said locking'plate against said lever when the shaft is forced out-ward, and a spring adapted, when the shaft is turned by said handle to permit the shaft to move inward, to so actuate said shaft and thereby release the locking plate.

4. In a chair, the combination with the relatively fixed chair body, of members movable with relation thereto, a shaft bearing secured to the body, a shaft turnable and slidable in said bearing, a sleeve secured to the shaft and engaging said bearing, said sleeve and bearing having opposing cam surfaces whereby when the shaft is turned in one direction or the other it will either be forced outward or permitted to move inward, a handle 011 the shaft, a spring engaging said shaft and adapted to turn or hold the shaft in position to cause said hearing to force the shaft outward, a slotted lever included in said movable members and engaging said shaft, a locking plate loose on said shaft, a stop on the shaft adapted to force said locking plate against said lever when the shaft is moved outward, a disk on the shaft, and a spring surrounding said shaft and confined against said disk and adapted, when said shaft is turned by said handle, to force said shaft inward and release said locking plate.

In testimony of which invention, we have hereunto set our hands, at Philadelphia, Penna, on this 19th day of August, 1909.

lVitnesses EMANUEL KLINIJ, JACOB HOFFMAN.

Images